Panasonic VL-SV75 Series Service Manual page 54

11.1.1.2 When replacing BBIC and X'tal
■ Preparation:
1. PC setting refer to [8.1.1 Main Monitor
2. Supply AC 230V.
Note:
Test points: Refer to [14.1.2 Main Board (Bottom
No. Items
1 1.8 V Supply Adjustment
2 3.3 V Supply Confirmation
3 RF3.2 V Supply Confirmation CL436(RF3.2V)
4 BBIC Clock Adjustment
Station].
View)].
Check Point
CL437(BB1.8V) Confirm that the voltage between test point CL437 and CL109 (GND) is 1.8 V ±
1.
0.02 V.
Execute the command "VDD", then check the current value.
2.
3. Adjust the 1.8V voltage of BB1.8V executing command "VDD XX" (XX is the
value).
CL438(BB3.3V) 1. Confirm that the voltage between test point CL438 and CL109(GND) is 3.3 V ±
0.2 V.
1. Confirm that the voltage between test point CL436 and CL109(GND) is 3.2 V ±
0.2 V.
CL402(BCLK) Confirm frequency between CL402 and CL109(GND).
1.
2. Input Command "sfr", then you can confirm the current value.
3. Check X' tal Frequency. (10.368 MHz ± 100 Hz).
If the frequency is not 10.368 MHz ± 100 Hz, adjust the frequency of CKM
4.
executing the command "sfr xx xx" (where xx xx is the value: d) so that the
reading of the frequency counter is 10.368000 MHz ± 5 Hz.
Procedure
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